rs62619939

Positions:

• chr10-16925587-C-A
• chr10-16925587-C-G
• chr10-16925587-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001081.4(CUBN):​c.6459G>T​(p.Leu2153Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,608 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: CUBN NM_001081.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0550

Genes affected

CUBN (HGNC:2548): (cubilin) Cubilin (CUBN) acts as a receptor for intrinsic factor-vitamin B12 complexes. The role of receptor is supported by the presence of 27 CUB domains. Cubulin is located within the epithelium of intestine and kidney. Mutations in CUBN may play a role in autosomal recessive megaloblastic anemia. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CUBN	NM_001081.4	c.6459G>T	p.Leu2153Phe	missense_variant	42/67	ENST00000377833.10	NP_001072.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CUBN	ENST00000377833.10	c.6459G>T	p.Leu2153Phe	missense_variant	42/67	1	NM_001081.4	ENSP00000367064.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461608 Hom.: 0 Cov.: 33 AF XY: 0.00000138 AC XY: 1 AN XY: 727116

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000331

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.35
BayesDel_addAF	Benign	-0.16	T
BayesDel_noAF	Benign	-0.46
CADD	Benign	19
DANN	Uncertain	1.0
DEOGEN2	Benign	0.26	T
Eigen	Uncertain	0.26
Eigen_PC	Benign	0.13
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Uncertain	0.87	D
M_CAP	Benign	0.027	D
MetaRNN	Uncertain	0.52	D
MetaSVM	Benign	-0.68	T
MutationAssessor	Pathogenic	3.0	M
PrimateAI	Benign	0.41	T
PROVEAN	Uncertain	-3.0	D
REVEL	Benign	0.27
Sift	Uncertain	0.0090	D
Sift4G	Uncertain	0.0060	D
Polyphen		1.0	D
Vest4		0.22
MutPred		0.61		Gain of catalytic residue at L2153 (P = 0.0325);
MVP		0.66
MPC		0.46
ClinPred		0.98	D
GERP RS		0.62
Varity_R		0.30
gMVP		0.62

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs62619939; hg19: chr10-16967586;